A radiation shielding mechanism for an underwater robot

Abstract

The utility model relates to the technical field of radiation protection, and discloses a radiation shielding mechanism for an underwater robot, the underwater robot comprising a camera, a battery and a circuit board, the radiation shielding mechanism comprising a waterproof shell, an inner cylinder in the shell and a camera shielding box fixed to one end of the inner cylinder, a first placement cavity being provided on one side of the inner cylinder inside the camera shielding box, a second placement cavity being provided on the other side, the first placement cavity and the second placement cavity being separated by a partition; the camera is placed in the camera shielding box, and the battery is placed in the first placement cavity; the circuit board is placed in the second placement cavity; the shell, the inner cylinder and the camera shielding box are all made of radiation shielding material. The utility model enables the underwater robot to effectively isolate nuclear radiation, meets its radiation shielding requirements and ensures its normal operation in a nuclear power pool.

Description

Technical Field

[0001] This utility model relates to the field of nuclear radiation protection technology, and in particular to a radiation shielding mechanism for underwater robots. Background Technology

[0002] As nuclear power plant reactors continue to operate, a series of highly radioactive nuclear wastes are generated after the nuclear fission fuel has fully reacted. These reactor wastes require periodic decontamination and transportation to designated sites for disposal. Currently, the industry is actively exploring the use of specialized underwater robots for such operations. This method can significantly improve operational efficiency and avoid direct exposure risks to personnel. However, the robot's own radiation shielding performance has become a key technical bottleneck determining its operational reliability. Because underwater robots operate for extended periods in environments with strong radiation and boron-containing water, their internal precision electronic components and mechanical structures are continuously subjected to penetrating damage from gamma rays and neutron radiation, severely impacting the stability and safety of underwater operations.

[0003] Current research on radiation protection systems largely focuses on optimizing the shielding structures of fixed equipment in nuclear power plants (such as main piping instrumentation connections and reactor pressure vessels), while effective solutions for radiation shielding mechanisms for specialized underwater robots used in nuclear engineering have yet to be found. The protective structures of fixed equipment, due to their large size and rigid assembly, are ill-suited to the specific requirements of underwater robots for compact layouts and dynamic sealing. Therefore, developing a radiation shielding mechanism adapted to underwater robots to effectively improve their overall radiation resistance has become a pressing technical challenge in the field of intelligent nuclear waste treatment. Summary of the Invention

[0004] In order to overcome or alleviate one or more of the above technical problems, the purpose of this utility model is to provide a radiation shielding mechanism for underwater robots.

[0005] This utility model provides the following technical solution:

[0006] A radiation shielding mechanism for an underwater robot, the underwater robot including a camera, a battery and a circuit board, characterized in that the radiation shielding mechanism includes a waterproof outer shell (1), an inner cylinder (2) inside the outer shell (1), and a camera shielding box (3) fixedly disposed at one end of the inner cylinder (2). The inner cylinder (2) has a first placement cavity (4) on one side near the camera shielding box (3) and a second placement cavity (5) on the other side. The first placement cavity (4) and the second placement cavity (5) are separated by a partition (6). The camera is placed inside the camera shielding box (3), the battery is placed in the first placement cavity (4), and the circuit board is placed in the second placement cavity (5). The outer shell (1), the inner cylinder (2) and the camera shielding box (3) are all made of radiation shielding material.

[0007] According to some embodiments, the outer shell (1) includes an outer shell body (11), a shell cover (12) and a bottom plate (13). The connection between the shell cover (12), the bottom plate (13) and the outer shell body (11) is provided with a sealing ring. The outer side of the connection between the shell cover (12) and the outer shell body (11) is also provided with a clamp (123).

[0008] According to some embodiments, the cover (12) includes a first placement part (121) and a first connecting part (122), the camera shielding box (3) is placed in the first connecting part (122), and the first placement part (121) is connected to the outer shell body (11).

[0009] According to some embodiments, the inner cylinder (2) is provided with a second connecting part (21) at one end facing the camera shielding box (3), and a first through hole (211) is provided at the center of the second connecting part (21). The first through hole (211) is used for the connecting wire connecting the camera (311) in the camera shielding box (3) and the battery in the first placement cavity (4) to pass through; the camera shielding box (3) is placed on the second connecting part (21) and fixedly connected to it.

[0010] According to some embodiments, the camera shielding box (3) includes a second placement part (31) and a third connecting part (32). The second placement part (31) is used to place the camera (311). The second placement part (31) communicates with the first placement cavity (4) inside the inner cylinder (2) through the through hole in the center of the third connecting part.

[0011] According to some embodiments, the inner cylinder (2) is provided with a first connecting plate (41) facing the camera shielding box (3), and the first placement cavity (4) is formed between the first connecting plate and the partition; a heat dissipation plate (8) is provided circumferentially between the first connecting plate (41) and the partition (6).

[0012] According to some implementations, the heat sink (8) is a flat surface facing inward and an arc surface facing outward.

[0013] According to some embodiments, the inner cylinder (2) is provided with a second connecting plate (51) on the opposite side of the side facing the camera shielding box (3). The second connecting plate (51) and the partition (6) form a second placement cavity (5). The second connecting plate (51) and the partition (6) are supported and connected by a connecting post (9). The placement plate (52) is disposed between the second connecting plate (51) and the partition. The circuit board is fixed on the placement plate (52). The second connecting plate (51) is fixedly connected to the bottom plate (13) outward.

[0014] According to some embodiments, the partition (6) has a second through hole (61) at its center, and the placement plate (52) is arranged horizontally along the axis of the second through hole (61).

[0015] According to some embodiments, the outer shell body (11), the bottom plate (13), the inner cylinder (2), and the third connecting part (32) of the camera shielding box (3) are made of tungsten alloy; the camera shielding box (3) is made of radiation-proof lead glass; the inner layer of the outer shell body (11), the bottom plate (13), the inner cylinder (2), and the third connecting part (32) of the camera shielding box (3) is provided with a polymer composite shielding material layer, which is selected from bisphenol A type epoxy resin; the shell cover (12) and the second placement part (31) are both made of lead glass.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) This utility model provides a camera shielding box, a first placement cavity and a second placement cavity, and uses customized polymer composite shielding materials for the camera, battery and circuit board of the underwater robot respectively. This design effectively isolates the internal electronic equipment from external radiation, meets its radiation shielding requirements, and ensures the normal operation of the underwater robot in the nuclear power pool for a long time.

[0018] (2) The outer shell, base plate, inner cylinder and third connection part of the camera shielding box of this utility model are all made of customized tungsten alloy, which has significant advantages in terms of thermal conductivity, radiation shielding ability per unit thickness and cleanliness, and can give full play to the movement ability and control stability of the underwater robot. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure provided in an embodiment of the present utility model.

[0020] Figure 2 This is a cross-sectional view provided in an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the internal structure of the outer shell provided in an embodiment of this utility model.

[0022] Figure 4 This is a schematic diagram showing the connection between the camera shielding box and the inner cylinder provided in this embodiment of the utility model.

[0023] Figure 5 This is a schematic diagram of the inner cylinder provided in an embodiment of the present utility model.

[0024] Figure 6 This is a schematic diagram of the first placement cavity and the second placement cavity provided in the embodiment of this utility model.

[0025] In the picture:

[0026] Outer shell 1; Outer shell body 11; Shell cover 12; First placement part 121; First connecting part 122; Clamp 123; Base plate 13;

[0027] Inner cylinder 2; Second connecting part 21; First through hole 211; Second connecting hole 212;

[0028] Camera shielding box 3; second placement part 31; camera 311; third connecting part 32; first connecting hole 321;

[0029] First placement cavity 4; First connecting plate 41; Third through hole 411; Third connecting hole 412;

[0030] Second placement cavity 5; second connecting plate 51; placement plate 52; circuit board 521;

[0031] Partition 6; Second through hole 61;

[0032] 7. Sealing ring; 8. Heat sink plate; 9. Connecting post. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the embodiments and accompanying drawings. However, it should be understood that the embodiments and accompanying drawings are for illustrative purposes only and do not constitute any limitation on the scope of protection of the present invention. All reasonable modifications and combinations that fall within the inventive spirit of the present invention are within the scope of protection of the present invention.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Example 1

[0037] In this embodiment, the main structure of the underwater robot includes three parts: camera 311, battery, and circuit board 521. When working in a high-radiation environment, these structures need to be protected against radiation.

[0038] like Figure 1-4 As shown, this embodiment provides a radiation shielding mechanism for an underwater robot, which includes a shell 1, an inner cylinder 2 placed inside the shell 1, and a camera shielding box 3 located at one end of the inner cylinder 2. The inner cylinder 2 and the camera shielding box 3 are fixedly connected. The inner cylinder 2 has a first placement cavity 4 facing the camera and a second placement cavity 5 away from the camera 311. The first placement cavity 4 and the second placement cavity 5 are separated by a partition 6. The camera shielding box 3 is used to place the camera, the first placement cavity 4 is used to place the battery, and the second placement cavity 5 is used to place the circuit board 521.

[0039] like Figure 1 The outer casing 1 includes an outer casing body 11, a casing cover 12, and a bottom plate 13. The casing cover 12 and the bottom plate 13 are fixedly connected to the outer casing body 11, and sealing rings 7 are provided at the connection points between the casing cover 12, the bottom plate 13, and the outer casing body 11 for sealing.

[0040] like Figure 2 The cover 12 includes a first placement portion 121 and a first connecting portion 122, which are integrally formed. The first placement portion 121 is used to place the camera shielding box 3, and the first placement portion 121 is connected to the outer shell body 11 through bolt holes on the first connecting portion 122. Preferably, a clamp 123 is also provided on the outside of the connection between the cover 12 and the outer shell body 11.

[0041] like Figure 5 As shown, the inner cylinder 2 has a disc flange-type second connecting part 21 at one end facing the camera shielding box 3. The center of the second connecting part 21 has a first through hole 211, which is used for the connecting wire connecting the camera in the camera shielding box 2 and the battery in the first placement cavity 4 to pass through. The camera shielding box 3 is placed outside the second connecting part 21 and fixedly connected to it.

[0042] like Figure 4 The camera shielding box 3 includes a second placement part 31 and a third connecting part 32. The second placement part 31 is used to place the camera 311, and the third connecting part 32 is used to connect with the second connecting part 21 of the inner cylinder 2 and communicate with the first placement cavity 4.

[0043] like Figure 6As shown, the first placement cavity 4 is formed by the cavity between the first connecting plate 41 and the partition plate 6. A heat dissipation plate 8 is circumferentially arranged between the first connecting plate 41 and the partition plate 6. The side of the heat dissipation plate 8 facing the inside of the first placement cavity 4 is flat, and the side facing the outside of the first placement cavity 4 is curved. The heat dissipation plates 8 are spaced apart, and a battery is provided on the flat side of the inner side of each heat dissipation plate 8. The first connecting plate 41 is provided with a third through hole 411, which is used for the connection cable connecting the camera in the camera shielding box 2 and the battery in the first placement cavity 4 to pass through.

[0044] Preferably, the third connecting part 32 is provided with a first connecting hole 321, the second connecting part 21 is provided with a second connecting hole 212, and the first connecting plate 41 is provided with a third connecting hole 412. The first connecting hole 321, the second connecting hole 212, and the third connecting hole 412 are correspondingly connected to allow the power cable or signal cable of the camera to pass through them, and the diameter of each hole is 3mm. The camera shielding box 3, the inner cylinder 2, and the first placement cavity 4 are fixedly connected by long bolts. There are four of each of the first connecting hole 321, the second connecting hole 212, and the third connecting hole 412.

[0045] like Figure 6 The second placement cavity 5 is formed by the cavity between the second connecting plate 51 and the partition plate 6. The two ends of the placement plate 52 are fixed to the second connecting plate 51 and the partition plate 6 respectively, and are used to place and fix the circuit board. The second connecting plate 51 and the partition plate 6 are fixedly connected by the connecting posts 9 arranged opposite to each other.

[0046] In some preferred embodiments, a second through hole 61 is provided at the center of the partition 6, and the placement plate 52 is arranged horizontally along the axis of the second through hole 61. The second through hole 61 allows the connecting wire between the battery and the circuit board to pass through.

[0047] Figure 6 As can be seen, the base plate 13 is fixedly connected to the second connecting plate 51 on the outside by bolts.

[0048] The base plate 13 is provided with a fourth connecting hole, and the second connecting plate 51 is provided with a fifth connecting hole. The fourth connecting hole and the fifth connecting hole are provided in correspondence, and the diameter of each hole is 3mm. The base plate 13 and the second placement cavity 5 are fixedly connected by long bolts. There are three fourth connecting holes and three fifth connecting holes.

[0049] In some embodiments, the outer shell 11, the base plate 13, the first connecting portion 122 of the shell cover 12, the inner cylinder 2, and the third connecting portion 32 of the camera shielding box 3 are all made of metal, such as custom-sized tungsten alloy. Furthermore, the inner layers of the outer shell 11, the base plate 13, the first connecting portion 122 of the shell cover 12, the inner cylinder 2, and the third connecting portion 32 of the camera shielding box 3 are all provided with a shielding material layer. This shielding material layer is made of a custom-sized polymer composite shielding material, such as bisphenol A epoxy resin. The shell cover 12 and the second placement portion 31 of the camera shielding box 3 are both made of lead glass, which is transparent and resistant to nuclear radiation. By using a custom polymer composite shielding material and a custom tungsten alloy covering the outer surface of the shielding material, the radiation shielding requirements of the underwater robot are met, thus enhancing its mobility and control stability. Typically, the thickness of the polymer composite shielding material in the inner cylinder 2 and the third connecting portion 32 of the camera shielding box 3 is set to 11 mm, which is sufficient to ensure that the overall radiation tolerance of the underwater robot is not less than 10 Gy / h.

[0050] This invention provides radiation shielding protection for the underwater robot's camera, battery, and circuit board by comprising a camera shielding box 3, a first placement cavity 4, and a second placement cavity 5, respectively. The first and second placement cavities 4 and 5 are made of customized polymer composite shielding material, while the camera shielding box 3 is made of radiation-resistant lead glass. This design effectively isolates the internal electronic equipment from external radiation, meeting its radiation shielding requirements and ensuring the underwater robot's normal operation for extended periods in nuclear power plant pools.

[0051] This invention does not impose any restrictions on the material, thickness, or size of the shielding material layer and the metal shell covering the outer surface of the shielding material. Those skilled in the art can make reasonable selections according to actual needs.

[0052] The above embodiments are merely preferred embodiments of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that improvements and modifications made by those skilled in the art without departing from the principle of this invention should also be considered within the protection scope of this utility model.

Claims

1. A radiation shielding mechanism for an underwater robot, the underwater robot comprising a camera, a battery, and a circuit board, characterized in that, The radiation shielding mechanism includes a waterproof outer shell (1), an inner cylinder (2) inside the outer shell (1), and a camera shielding box (3) fixedly disposed at one end of the inner cylinder (2). The inner cylinder (2) has a first placement cavity (4) on one side near the camera shielding box (3) and a second placement cavity (5) on the other side. The first placement cavity (4) and the second placement cavity (5) are separated by a partition (6). The camera is placed inside the camera shielding box (3), the battery is placed in the first placement cavity (4), and the circuit board is placed in the second placement cavity (5). The outer shell (1), the inner cylinder (2), and the camera shielding box (3) are all made of anti-radiation shielding material.

2. The radiation shielding mechanism for underwater robots according to claim 1, characterized in that, The outer shell (1) includes an outer shell body (11), a shell cover (12) and a bottom plate (13). The shell cover (12), the bottom plate (13) and the outer shell body (11) are all provided with sealing rings. The outer shell cover (12) and the outer shell body (11) are also provided with a clamp (123) on the outside.

3. The radiation shielding mechanism for underwater robots according to claim 2, characterized in that, The cover (12) includes a first placement part (121) and a first connecting part (122). The camera shielding box (3) is placed inside the first connecting part (122), and the first placement part (121) is connected to the outer shell body (11).

4. The radiation shielding mechanism for underwater robots according to claim 3, characterized in that, The inner cylinder (2) has a second connecting part (21) at one end facing the camera shielding box (3). The center of the second connecting part (21) has a first through hole (211). The first through hole (211) is used for the connecting wire connecting the camera (311) in the camera shielding box (3) and the battery in the first placement cavity (4) to pass through. The camera shielding box (3) is placed on the second connecting part (21) and fixedly connected to it.

5. The radiation shielding mechanism for underwater robots according to claim 4, characterized in that, The camera shielding box (3) includes a second placement part (31) and a third connecting part (32). The second placement part (31) is used to place the camera (311). The second placement part (31) is connected to the first placement cavity (4) inside the inner cylinder (2) through the through hole in the center of the third connecting part.

6. The radiation shielding mechanism for underwater robots according to claim 5, characterized in that, The inner cylinder (2) is provided with a first connecting plate (41) facing the camera shielding box (3), and the first placement cavity (4) is formed between the first connecting plate and the partition; a heat dissipation plate (8) is provided circumferentially between the first connecting plate (41) and the partition (6).

7. The radiation shielding mechanism for underwater robots according to claim 6, characterized in that, The heat sink (8) is flat on the inner side and curved on the outer side.

8. The radiation shielding mechanism for an underwater robot according to claim 7, characterized in that, The inner cylinder (2) has a second connecting plate (51) on the opposite side of the side facing the camera shielding box (3). The second connecting plate (51) and the partition (6) form the second placement cavity (5). The second connecting plate (51) and the partition (6) are supported and connected by a connecting column (9). The placement plate (52) is set between the second connecting plate (51) and the partition. The circuit board is fixed on the placement plate (52). The second connecting plate (51) is fixedly connected to the bottom plate (13) outward.

9. The radiation shielding mechanism for an underwater robot according to claim 8, characterized in that, The partition (6) has a second through hole (61) at its center, and the placement plate (52) is arranged horizontally along the axis of the second through hole (61).

10. The radiation shielding mechanism for an underwater robot according to any one of claims 5 to 9, characterized in that, The outer shell (11), bottom plate (13), inner cylinder (2), and the third connecting part (32) of the camera shielding box (3) are made of tungsten alloy; the camera shielding box (3) is made of radiation-proof lead glass; the inner layer of the outer shell (11), bottom plate (13), inner cylinder (2), and the third connecting part (32) of the camera shielding box (3) is provided with a polymer composite shielding material layer, which is selected from bisphenol A type epoxy resin; the shell cover (12) and the second placement part (31) are both made of lead glass.

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